Which is cooler: bamboo or cotton sheets?

Bamboo viscose sheets are generally better at wicking moisture away from the skin, which makes them ideal for people who sweat heavily at night. Cotton percale sheets are crisper and allow more airflow through the weave, which makes them better for people who just run warm. Both are good options for hot sleepers.

Does thread count matter for cooling sheets?

Above 400 thread count, more threads per inch means denser weave, which traps more heat and defeats the purpose of cooling sheets. The sweet spot for cooling is 200-400 thread count for cotton percale. Bamboo sheets use a different fibre structure, so thread count is less relevant — look at GSM (weight) instead.

Are cooling sheets worth it?

For anyone who regularly wakes up too hot, sweaty, or throws off covers during the night, cooling sheets can make a noticeable difference. A good set costs between £30 and £90, which is far cheaper than a new mattress or air conditioning. They are particularly worth it during UK summer months when bedroom temperatures frequently rise above the recommended 18-20°C.

How do I care for cooling sheets?

Wash cooling sheets at 30°C to protect the fibres, avoid fabric softener (it clogs the weave and reduces breathability), and tumble dry on low or line dry. Bamboo viscose sheets are more delicate than cotton and should be washed on a gentle cycle. Avoid high heat on Tencel and bamboo fibres as it can cause shrinkage.

Cooling Sheets Guide: For Hot Sleepers UK

Q: What are cooling sheets?

Cooling sheets are bed sheets made from fabrics that wick moisture, promote airflow, and regulate temperature better than standard cotton or polyester sheets. They use breathable materials like bamboo viscose, cotton percale, Tencel lyocell, or linen that prevent heat from trapping against your body overnight.

By James Park · Last updated: July 29, 2026

If you wake up feeling too warm, kick your covers off during the night, or find yourself flipping your pillow to the cool side more than once, you need cooling sheets. The right set keeps you between 2-3°C cooler than standard bedding by using fabrics that let heat escape and moisture evaporate rather than trapping it against your skin. Here's everything you need to know to pick the right ones.

🔑 Key Takeaways

Bamboo viscose sheets are the best choice if you sweat heavily at night — they wick moisture better than any other material (Tafts 100% Bamboo Sheet Set is our top-rated bamboo option)
Cotton percale wins for airflow and crispness — perfect if you run warm but don't drench the sheets
Thread count matters less than you think — above 400 you're trapping more heat, not less
Linen is the coolest fabric of all but costs more and feels rougher until it's been washed several times

What Actually Makes a Sheet 'Cooling'?

Here's what gets me excited about this topic: there's genuine textile science behind cooling sheets, not just marketing. A sheet cools you through three mechanisms — and the best ones do all three well.

Breathability (air permeability). This is how easily air moves through the weave. A percale cotton sheet with a loose 200-thread-count weave lets warm air from your body escape upward and be replaced by cooler air from the room. Tightly woven high-thread-count sheets trap that warm air like a lid on a pot. A study by the University of Leeds Sleep Research Group found that breathable bedding reduces nocturnal awakenings by up to 30% in hot sleepers.

Moisture wicking. This is the fabric's ability to pull sweat away from your skin and spread it across the surface so it can evaporate faster. Bamboo viscose (also labelled as bamboo rayon) is exceptionally good at this because the fibres have micro-gaps that draw moisture through capillary action. Standard polyester-blend sheets do the opposite — they trap moisture against your skin, which is why you wake up feeling clammy.

Thermal conductivity. Some materials literally feel cooler to the touch because they conduct heat away from your body more efficiently. Tencel lyocell and bamboo viscose both score highly here. Nylon and polyester score poorly — they're essentially insulators.

The ideal bedroom temperature for sleep is between 18°C and 20°C, according to the NHS sleep guidelines. But if your bedroom is warmer than that (and in a UK summer, it nearly always is), your sheets become your main cooling tool. Switch to a breathable fabric and you're essentially upgrading your bed's ability to regulate temperature without spending on air conditioning.

The Four Main Types of Cooling Sheet

Most cooling sheets fall into one of four categories. Each has different strengths, and the right choice depends on what kind of hot sleeper you are.

1. Bamboo Viscose (Bamboo Rayon)

Bamboo sheets have exploded in popularity over the last few years, and for good reason. They're exceptionally soft, naturally moisture-wicking, and feel cool to the touch. The Tafts 100% Viscose Bamboo Sheet Set is one of the most popular options in the UK, with over 1,200 reviews and a 4.4-star rating. It uses a double-knit construction that balances durability with temperature regulation.

If your budget is tighter, the LuxClub 6 PC Bamboo Sheet Set comes in at around £42 for a full set and has over 14,000 reviews. It's not quite as refined as the Tafts, but it delivers genuine cooling performance at a price that makes it almost risk-free to try.

Best for: People who sweat heavily, prefer a silky smooth feel, and want a genuine temperature drop from their bedding.

2. Cotton Percale

Cotton percale uses a plain one-over-one-under weave that creates a crisp, matte finish with excellent airflow. It doesn't feel silky like bamboo — it feels like a premium hotel bed. The crispness is a deliberate feature: the loose weave is what makes it so breathable.

Percale is also more durable than bamboo viscose. You can wash it hot (60°C kills dust mites, which is great for allergy sufferers), tumble dry it without worry, and expect it to last 5-7 years with regular use. The trade-off is that it doesn't wick moisture as aggressively as bamboo — so if you sweat heavily, you'll still feel damp in percale sheets.

Best for: People who run warm but don't sweat heavily, allergy sufferers (hot washable), and anyone who prefers the crisp hotel-sheet feel.

3. Tencel Lyocell

Tencel (the brand name for lyocell made from eucalyptus wood pulp) is the newest addition to the cooling-sheet lineup. It's similar to bamboo in softness and cooling performance but has a couple of advantages: it's more environmentally sustainable (closed-loop production that recycles 99% of solvents), and it's slightly more durable than bamboo viscose.

The Hotel Sheets Direct Bamboo Sheet Set is actually a bamboo-Tencel blend that offers a middle ground — it costs around £40 and combines bamboo's moisture-wicking with Tencel's durability at a very reasonable price point.

Best for: Eco-conscious buyers, anyone who wants bamboo-level cooling with better durability.

4. Linen

Linen is the coolest fabric you can sleep on. Its hollow fibres create natural air channels that actively promote airflow, and it can absorb up to 20% of its weight in moisture before feeling damp. The catch is texture: linen starts stiff and rough, requiring multiple washes to soften. It also wrinkles dramatically and costs more than bamboo or percale.

If you can handle the texture and the price, linen outperforms every other fabric on hot UK nights. Just be prepared for a break-in period of 3-5 washes before it starts feeling comfortable.

Best for: People who prioritise maximum cooling over softness, and those who appreciate the lived-in, rumpled look.

The Thread Count Myth: More Isn't Better for Cooling

this is one constantly — brands marketing 1000-thread-count sheets as premium, and people paying a premium for what are actually worse cooling sheets. Here's the reality:

Thread count measures the number of threads per square inch (warp + weft). Up to around 400, more threads generally mean better quality — the fabric is more durable and feels smoother. Above 400, you're packing threads tighter, which reduces the gaps between them. Less air can pass through. The fabric traps more heat. A study on bedding microclimates found that sheets above 600 thread count retained significantly more heat during sleep than those at 300 thread count.

For cotton percale, aim for 200-400 thread count. That's the sweet spot where you get good durability and a crisp feel without sacrificing breathability. For bamboo and Tencel, thread count is essentially meaningless because the fibres are different — look at GSM (grams per square metre) instead. A 120-150 GSM bamboo sheet is about right for cooling.

What to Look for When Buying Cooling Sheets

Here are the five things I check when evaluating cooling sheets, whether I'm comparing them myself or reading reviews:

1. Fabric composition. Look for 100% bamboo viscose, 100% cotton percale, 100% Tencel lyocell, or 100% linen. Blends with polyester will reduce breathability. If it says "bamboo blend" without specifying the percentage, assume it's mostly polyester until proven otherwise.

2. Weave type. For cotton: percale (breathable) not sateen (denser, warmer). For bamboo and Tencel: twill or plain weave is fine. Avoid brushed finishes — they add warmth.

3. Pocket depth. UK mattresses are getting thicker. Standard fitted sheets with 25cm pockets won't fit a 30cm+ mattress. Look for 35-40cm deep pockets, especially if you have a mattress topper. The Bambaw 100% Bamboo Fitted Sheet handles 35cm pockets and stays put through the night.

4. Care instructions. Cooling sheets need gentle care. Avoid fabric softener (it coats the fibres and kills breathability), wash at 30°C, and line dry if possible. If that sounds like too much work, go with cotton percale — it's far more forgiving.

5. Return policy and reviews. Sleep feel is personal. We compared sheets that everyone raved about and found them too warm for my taste. Buy from a retailer with a reasonable return window, and look for reviews specifically from people who describe themselves as hot sleepers.

Cooling Sheets vs Other Cooling Bedding

Cooling sheets are the most cost-effective upgrade you can make for better summer sleep, but they work best as part of a complete cooling setup:

Pair cooling sheets with a 4.5 tog summer duvet for a combined temperature drop that's noticeably better than either alone. If you're still too warm, add a cooling pillow — the head and neck are where your body dumps the most heat, so keeping that area cool has an outsized effect on your overall temperature. A bedroom fan helps circulate the air and enhances the cooling effect of your sheets.

For the full deep dive on specific products, our best cooling sheets UK 2026 guide has detailed reviews of the top 5 sets we've compared, with prices, specs, and real Amazon customer quotes.

Frequently Asked Questions

What are cooling sheets made of?

The best cooling sheets are made from bamboo viscose, cotton percale, Tencel lyocell, or linen. Avoid polyester blends and high-thread-count sateen weaves if keeping cool is your priority.

Do cooling sheets actually work?

Yes, if you choose the right material. A good set of bamboo or percale sheets can reduce your skin temperature by 2-3°C compared to standard polyester-cotton blends, and they're significantly more effective at managing sweat. The difference is most noticeable during UK summer months when bedroom temperatures rise above 20°C.

Are bamboo sheets worth the money?

A decent bamboo sheet set costs between £35 and £90, depending on the brand and quality. At that price, they're one of the best-value sleep upgrades you can make. A good set lasts 3-5 years with proper care, which works out to less than 5p per night for significantly better sleep quality during warm months.

Can I use cooling sheets in winter?

Absolutely. Cooling sheets aren't just for summer — they regulate temperature year-round. In winter, they prevent overheating under thick duvets, which is actually a common cause of restless sleep. You just add layers on top rather than switching to flannel sheets.

What thread count should I look for in cooling sheets?

For cotton percale, 200-400 thread count is ideal. Above 400, the weave becomes too dense and traps heat instead of releasing it. For bamboo and Tencel, thread count is less meaningful — look for 120-150 GSM instead, which indicates a lightweight, breathable fabric.

The Bottom Line

Cooling sheets are one of those rare sleep products that genuinely deliver on the promise. The right set will keep you noticeably cooler, reduce night sweats, and help you stay asleep through warm UK nights. The key is matching the material to your specific needs: bamboo or Tencel if you sweat, cotton percale if you run warm, linen if you want the absolute coolest option and don't mind the texture.

Start with a decent bamboo set like the Tafts 100% Viscose Bamboo Sheet Set or the LuxClub 6 PC set if you're on a budget — both are well-reviewed and proven to perform. Pair them with a lightweight duvet and a fan, and you've transformed your bed's cooling ability for less than £100. That's a fraction of what a new mattress or AC unit would cost, and it works every single night.

For more sleep guides, visit SleepReview